Sixteen-year-old Ray longs to leave his town and go away for college, but, one morning, he wakes up to discover his world has ceased to exist. His family, friends, and neighbors are gone and, in this new world, humans are no longer on the top of the food chain. In order to survive, Ray must depend upon a young deserter named Eden. Guided by a mysterious diary, the two begin a dangerous journey where they learn that the answers to some questions are...